Asked about the motive for the attack, Lombardo said: “I can’t get into the mind of a psychopath at this point.” The sheriff said a check of federal and state databases showed Paddock was not on law enforcement authorities’ radar before the bloodbath.

Police said Paddock was from Mesquite, Nevada, about 80 miles north of Vegas, and lived in a retirement community.

As CBS2’s Valerie Castro reported, police executed a search warrant at the Mandalay Bay hotel room from which Paddock fired the fatal shots and found several weapons.

Lombardo said police have also completed a search warrant in Mesquite but said they were looking at an additional property in northern Nevada.

Aldean was in the middle of a song when the shots came rapidly: pop-pop-pop-pop. Video then showed Aldean stopping and the crowd getting quiet as if it were unsure of what had just happened.

As CBS2’s Alice Gainer reported, the hail of bullets seemed never-ending to concertgoers.

“I thought: ‘This has to stop at any minute. This is a bad situation, but at least it’s going to be over soon,’” said witness Shaun Hoff. “And it just wouldn’t end.”

There was confusion as many got on the ground ducking. Afterward, the gunman paused and then fired another volley, the muzzle flashes visible from the casino, as more victims fell to the ground while others fled in panic. Some hid behind concession stands, while others crawled under parked cars.

People in the frantic crowd of 22,000 took off in every direction to get out of the line of fire. Some of the injured helped those who were wounded even worse.

“This girl had been standing right beside me and she had fallen. First she stood there and she grabbed her stomach, she looked at her hands, her hands were all bloody,” said witness Gayle Davis. “She looked at her hands, her hands were all bloody and she just screamed and fell down.”

“About five feet next to me, I saw a man who had a gunshot wound right under his neck — right here,” said witness Taylor Benge. “That’s when I knew something wasn’t right. That’s when I knew it was fight or flight and get out of there.”

“Everyone thought it was fireworks at first and people just started dropping around us,” another woman said. “And everybody tried to stay down. Every time a group would get up to start running away, they would just start shooting again.”

“They turned the lights on and about five feet from me you could see a guy with a bullet wound right in his neck — motionless,” another man said. “And from there on in, it was just, you know, people started dropping like flies.”

“He fired another 15 rounds and then quiet and then what we were doing was every time he stopped and was reloading, we were getting up and making our way towards the fence and then he started shooting again,” said another witness.

@FBILasVegas is asking anyone with videos or photos from the 10/1/17 Las Vegas shooting to please call 1-800-CALLFBI (255-5324)

“You could hear the bullets getting closer and then it would get quiet and they’d reload,” said another. “And they’d start again and the girl standing right behind me, about two feet, she got shot in the stomach.”

“This surreal moment was seeing some man fireman carry a girl in a white romper, and it was stained red and he was stained red, running with that girl,” said witness Reighlynn Parsley.

Victims were moved in wheelbarrows, office chairs, and even hotel luggage carts.

A stranger put pressure on Tom McIntosh’s bleeding leg and rushed him to the emergency room.

“Surrounded by thousands of people you don’t know, who’s shooting at you, it’s stressful,” McIntosh said.

Even hours later, some were still too numb to process what they had survived.

“I didn’t shed a tear, in a strange sort of way, until we just walked out here, and I guess it’s just because you go on autopilot,” said Kami Ready. “But there were people just 10, 15 feet from us that didn’t, didn’t leave.”

Lombardo said officers confronted Paddock on the 32nd floor of the Mandalay Bay Hotel and Casino across the street from the concert.

SWAT teams using explosives stormed the gunman’s hotel room and found he had killed himself, authorities said.

Paddock had checked into the hotel on Thursday, and authorities say he used two windows to shoot down into the crowd.

Investigators said Paddock used two different rooms to shoot down into the crowd from the 32nd floor, breaking the sealed windows with what police said appeared to be a hammer.

Lombardo said authorities believe this was a “lone wolf” attack and the Homeland Security Department said there was no “specific credible threat” involving other public venues in the U.S.

Lombardo said among the dead is an off-duty Las Vegas police officer. Two other off-duty officers were also hurt.

We have located the vehicles in question, and we are confident we have located the female person of interest.

Police said they had been looking for a person of interest connected to the suspect, identified by police as 62-year-old Marilou Danley. Police said Danley was overseas in Tokyo at the time of the shooting and has spoken to authorities.

The Clark County, Nevada Sheriff’s office said they do not believe Danley was involved in the shooting.

Police believe Paddock acted alone.

“I want to emphasize that we believe Paddock is solely responsible for this heinous act,” Fasulo said.

He said the department is aware of rumors that there was more than one assistant, but there is no evidence to support such claims.

Some information was also coming out about the victims late Monday afternoon.

“Tonight has been beyond horrific. I still don’t know what to say but wanted to let everyone know that me and my crew are safe,” he wrote. “My thoughts and prayers go out to everyone involved tonight. It hurts my heart that this would happen to anyone who was just coming out to enjoy what should have been a fun night.”

Meanwhile, hours after the shooting, the focus for doctors became trying to save who they could.

“Nonstop surgery after surgery till about 4:30, 5 o’clock this morning,” said trauma surgeon Dr. Jay Coates of the UNLV School of Medicine.

“I know there’s a family that will be shattered,” said Dr. Paul Chestovich, a surgeon at University Medical Center. “Just the knowledge of the amount of people that have been hurt by this incident, it’s hard to deal with.”

“No religious affiliation, no political affiliation — he just hung out,” said Eric Paddock. When asked if his brother had any history of mental illness, Eric Paddock said, “Not a bit.”

Eric Paddock said his brother was a multimillionaire who made much of his money investing in real estate. He was also an accountant and professional gambler who had won large jackpots, and a licensed hunter and pilot.